Wood-bending apparatus



APF 4, 19.50 l c. A. JORDAN 2,502,460 v WOOD-BENDING APPARATUS Filed Oct. 25, 19464 2 Sheets-Sheet 1 INVENToR C.A.JORDAN ATTO R N EY C.' A. JORDAN WOOD-BENDING APPARATUS April 4, 195o 2 Sheets-Sheet 2 Filed oct. 25,l 194e mmm w mw R O wolww ..N..J. .A Aww C r Patented Apr. 4, 1950 PAT ENT OFFICE WOOD-BENDING APPARATUS Clarence A...l'.'ordan, Madison; Wis.

Application @woher/25, 1946, SerialNo. 705,786-

5` Claims; ICI. 144-264') (Granted under-the act of March 3, 1883, as amended:April'30,1928;. 3*"4'0r (i. G. 757,)

This application isY made under the ace, or Marchv 3, 1883,` as amended bythe-act of' April 30,'

1928, andv the invention herein described, ify patented,l maybe-'manufactured and. used by or for the Government ofv the United States of America for governmental purposes without thev that has beenl givena softening` treatment with:

steam, hotv water,4v ory chemicals. The improvement is in a: modified tension strap andreversed levers for applying end pressure and has the iollowing objects:

To provide rigid end blocks which cannot tip orvv back. away from z the ends` of the stick.- beingbent;

To provide convenient. adjustment *tov accom.

modate differentlengths of bending sticks;

To. control` end pressure; To provide a :convenient arrangement for using a minor strap to hold-the. bent member toshape:v

after removal from the apparatus;

To provide reversed levers and strap. which are. separate pieces, sov that by having a number of straps of. diierent lengths it is possible to bend. anylength stickusing thesame pair of reversed levers for all.

Iattain theseobiects by the device illustrated in the accompanying drawings, in which Figure 1 is athre'e dimensional -view of the. woodebending apparatus showing the stick :being bent around a wooden for-m;

Figure v2`is a face view of the metal strap withv integral adjustingscrews at each end;

Figure 3 is a view of the reversed lever havingl an integral end-blockA bracket and a removable end block;

Figure 4 is a side view of the assembled strap, reversed levers, removable vend blocks andminor strap in place;

Figure 5 isa View in section taken at line 5--5 of Figure 4;

Figure 6 is a view in section taken at line ISP-.51l

of Figure 4;

In Figure 2vis shown the metalestrap 4 having an adjusting-screw.2.iastenedthereto, or integral .Y

therewith, at each end. The bending lever or reversed lever I, shown'Figure 3;'c0mprises a U- shaped-bar 6 having WallsI-Zfand I3 integrally or;ridgedlyfattached to anl end-block bracket.

2. Thek bracket consistsffofiend and sider wallsi 8`f andi 9 and topandbottomiwallsfl. Walll8`isfperforated at I4 to receive-theadjusting'sorew'2and at I5' forattachment'offcabler' I 9.

OneV mode-of. application of this inventionl is'. shown in Figure'-r 1. around form I Bby'pullinga cables lg'attachedatv Ifto'bracketsl. Between'the metal/strap tand? the stick. I I1 is'the minor? strap; II).I Before placingA the movable'blocksgthei minorstrap IIlI` is'.4

placed on metal strap4 withthe ends of theiminory strap fitting: against an'd'projectingv beyond the" brackets;l`

after the ywood-bending operation: The ends arci thus fastened together whenthe bendis' com` pleted, thereby preventing the bend Afrom spring.- ingY back:A when removed" from the' bending: apparatus.vv

In use, the adjusting screws: 2 arel passed.` through the holes; I 4'infthe ends oithe brackets, and' are' tted with Ywashers and with adjusting nuts 3; temovalolefV end blocks 5 Imilled out to' t' ther end-block"brackets,` are brought to bear against theendsof the piecebeingabent, by tight-1 ening the: adjusting. nuts." Endv pressure, is` applied "or *released by fm'anipulation of the adjust'- ing nuts 3 prior'to: and during` bending.v

Asstated above; this rbentrnember'must 'be-held# in the bentr shape until the wood hascooledandv become set in its new shape; For this purpose,

thev so-called. minorstrap of lighter metal than the1tension strap' is'y often placedbetween the tensionstrap and the' stick beforeibending, ther ends being fastenedi'togetherWhenthe bend is`-` 5, permitsa minor/strap` to be vlaid-flat against thetensionu or. majorstrap: with ends extending.; out. between the majoristrap and the end blocks.` When :the bend is completed the'ends ofthe minor`r strap-can be merelybentaround 'the end blocks and, -fastened together-,g leaving.' ther-end blocks in l place againstthe ends @of thev bentv stick. Addi tional pairsf oiend blocks are used for. making further bends.

Having :thus described.. myA invention, I claim: 1. In a wood-bending apparatus, a tension strapgaibending leven for each'endofthe. strap, theouterr end portions of the vlevers being attached totheastrap, the .unattached inner. ends ofi-the.`r if levers. extendingglongitudinallygback. off the: ten-r g A Wooden stick II is bent:

The ends of; the minor; strapomay be: providedfwithV means? such as' holes? I6; or the'.y equivalent; to which'v af: cable'v I 'I` may. be: attached;

sion strap, a bracket fixed upon and `intermediate the ends of each lever and having a transverse end pressure applying face, and open-ended aperture in each transverse face, a removable end block over the inner face of each aperture between the aperture and the end face of the wood being bent, a minor strap between the wood being bent and the tension strap, the ends of the minor strap being free of the tension strap and of the levers and extending longitudially outwardly through and beyond the apertured transverse faces, whereby, after the bending is done, and upon tying the ends of the minor strap, the minor strap, bent wood, and end blocks are removable from the tension strap as a unit, the end portions of the minor strap passing through the open ends of the apertures for the purpose of said removal.

2. In a wood-bending apparatus, a. tension strap having a middle portion adapted to support the back of a piece of wood to be bent, a bending lever mounted upon each end of the strap, one end only of each lever being attached to an end of the strap, the unattached end extending longitudinally back of the strap, a bracket xed upon each lever intermediate with the ends of the lever, the bracket having a transverse face adapted to be brought to bear pressure against an end face of the wood being bent, an open-ended aperture in said transverse face, a minor strap placed between the tension strap and the wood. the ends of the minor strap extending longitudinally through the apertures and 4beyond the transverse faces of the brackets, the minor strap being unattached to the tension strap and to the bending lever, the end portions of the minor strap being removable from the tension strap through the open-ended apertures, whereby after the bending is done, and upon tying the ends of the minor strap, the minor strap and bent wood are removable as a unit.

3. Ina wood-bending apparatus, a tension strap having a middle portion adapted to support the back of the piece of wood to be bent, a bending lever positioned on an end portion of the tension strap and movable longitudinally thereon, a second bending lever on the other end portion of the tension strap, the ben-ding levers each comprising a lever portion adapted to -be brought to bear against the back of the piece of wood to be bent adjacent to an end face of the latter and an end bracket rigidly affixed to the lever portion which bracket has a surface that is angularly disposed to the lever portion and which surface is adapted to be brought to bring pressure to bear against said end face of the piece of wood to be bent,y means for adjusting the movably positioned bending lever lengthwise of the tension strap whereby pressure may be applied to and released from the ends of the piece of wood to be bent, each of said bracket surfaces having an open-ended aperture, a minor strap between the tension strap and the back of the piece of wood, the minor strap having free ends extending longitudinally of the tension strap outwardly through and beyond 'the said open-ended apertures, the ends of the minor strap being removable through the open-ended apertures, whereby the piece of wood and the minor strap are remov able as a unit upon completion of the bending operation.

fl. In a wood-bending apparatus, a flexible tension strap having a middle portion adapted to support the back of the piece of Wood to be bent, said tension strap -having an adjusting screw at each end thereof; and a rigid bending lever adjustably positioned on each adjusting screw, each bending lever having a rigid end bracket which has a transverse surface adapted to be brought to position to apply pressure against an end of the piece of wood to be bent, each of said bending levers having a lever portion comprising a bar adapted to be made to bear against the back of the piece of wood adjacent to said end of the latter, the bracket being rigidly xed to the lever portion and having a second transverse surface having an aperture through which the adjusting screw extends, and an adjusting nut on each screw which is movable longitudinally thereon and thus brought to bear against said second transverse surface, whereby pressure may be applied to and released from the ends of the wood being bent prior to and during the bending operation by turning said adjusting nut, each of said rst transverse surfaces having an open-ended Vslot aperture, the ends of the tension strap passing longitudinally through said open-ended apertures, and removable blocks in position between the first transverse surfaces and the ends of the piece of wood, said blocks each having an extension that fits in the slots.

5. In a wood-bending apparatus, a bending lever, adapted for usewith a tension strap in bending an elongated stick of wood, comprising a composite bar, having a portion that extends under the tension strap and one end portion of the stick, this portion of the bar having a U- shaped cross section with the open part of the U facing away from the tension strap, and having another portion extending longitudinally beyond the end of the stick, which latter portion of the bar is also of U-shaped cross section but with the open part of the U facing toward the tension strap, the sides of the U-bar of one portion being extensions of the sides of the U-bar of the other portion and the bottom of the U-bar of the latter portion of 'the lever extending back lunder the piece of wood to be bent a short distance, giving that short sub-portion of the bar a rectangulan shaped cross section, the side walls of the portion of the bar that extends longitudinally beyond the end of the stick having two transverse flanges, one flange facing the end of the stick, the second flange being adjacent the end of the bar, the first flange having an open-ended slot aperture, a removable end block, at each end, between the first flange and the end of the stick of wood, the block having an extension that projects within the slot, the ends of the tension strap extending underneath the blocks and longitudinally through and beyond the slot apertures and being fastened at the ends to the second anges, and means by which a bending force can be applied to the second flanges.

CLARENCE A. JORDAN.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 115,536 Smith et al l May 30, 1871 511,193 Block Dec. 19, 1893 1,906,392 McLeod May 2, 1933 FOREIGN PATENTS Number Country Date 648,804 Germany July 20, 1935 f 

